http://www.suasnews.com/2015/03/34801/energyor-demonstrate-fuel-cell-powered-multirotor/ a 10 hour flight could certainly be useful. I wonder if one could be made to fit the Inspire and if the software could be modified to support it? Once newer drones could be made to fly beyond LOS, I could see nearly endless applications. Imagine sending one from Dallas to Phoenix to carry documents, or to deliver medicines not available locally. Damn, we left the kid's toy at your house. No problem, I'll have the drone drop it off.